365GT4 2+2 velocity stack filters?

Stock air cleaners serve 3 purposes.

1. to filter contaminants from the incoming air without significantly restricting flow
   
2. to reduce the chance of fire
   
3. to attenuate intake noise

Replacing them with individual screens (like a racecar) will give you the "giant suckin' sound" but are both a significant fire hazard and will subject your expensive engine to incoming dirt.

I have seen stacks fitted with small air filters but they will restrict airflow (and power) significantly (you may have to "lean" out the mixture a lot to get it to even run).

There are small foam elements that can be fitted but if your engine backfires they will burn.

 

I think you may get allot of the toasty warm "right over the headers" air. Especially on a 365GTC/4, GT4 2+2, or 400GT, where the carb intakes really ARE right over the headers. At speed, it may not be an issue ?

 

Wise move. The trumpets may look cool and sound better but you will lose power and have other issues (as described above).

Regards,

Art S.

 

Just replaced the filters on my 365 GT4. 3 hours later. I think it might be quicker to remove the engine than replace the air filters. Each filter will cost close to $200 each, I found some for $178. You will also need all new gaskets for both sides of the filter box. The filters will not come out without removing the filter box. At least not without damaging the filter. Watch the clips when you are reassembling the filter housings, as the front one on the brake servo side can slip back into the wrong position and it will be impossible to snap in into the lid. You must then completely remove the filter housing again. Ask me how I know this.

Joe

 

ITG makes foam filters 1 for each carb (total of six). Also go to one of your weber outlets or buggy shop someone that deals with webers and you can buy individual units with paper elements haven't checked K&N (just google weber carbs). Your carbs are 38 side drafts but should be the same bodies as the 40's check with the weber vendors they can help you and you can stll have some fun and retain your spark arrester. I have seen them on the 365GT4/2+2 befor....have thought about it with mine just for fun... 6 webers on a cool night....wow!
Rick

PS Keep your originals

 

It's not easier to remove the engine.....been there done that. Those filters are redicuously expensive though. Just glad they are available.
Rick

 

Despite other comments made here, removing the factory air boxes is OK. The stock air boxes have filters that cost $200 each and have an effective filter area of about 4" even though the filter is about 20" long. These filters foul quickly and then need to be replaced. I have put on individual pod filters for each inlet (attached picture), available from Pierce Manifold. But as mentioned, this application has an error in that there is not a cold air input. I am now waiting on a carbon fiber air box that I designed that has the plenum volume required for each bank, facilitates the cold air inlet and uses a single K&M cone air filter. All of which will be a huge improvement over stock. The engine has a wonderful note with the stock boxes removed.
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Boyd

Are those hoses silicone, or just green. I am about ready to do a hose change and silicone would be nice. Let us know how the air box works out. Would buy the plans if you drew it in CAD.

joe

 

Joe,
silicone on the hoses and the air boxes were modeled using Solidworks and can be converted to any format. I will let you know how they work out when done. As for the hoses, go for what you can afford, but hoses, even silicone, are cheaper then the tow back home if a conventional hose blows out, which has happened to me before.

 

File photo of alternative. Would like better with wrinkle finish. This example appeared to have many miles on this setup. Note right hand drive.
Rick
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Looks like a K&N setup. It also appears to have heat shields under the air cleaners.

This might actually be an improvement over stock.

 

B3Tech,

What a beautiful engine bay!

Rick

 

Rick,
thanks a labor of love. The previous setup is from Weber I believe. Check out the Pierce Manifold website. This setup has challenges as my original. No cold air input. Simpliest way to improve inlet air quality is to remove the standard air filter, install a duct from the nose of the airbox and run it to the front grill area and plug a K&N cone filter onto the air inlet. Instant inlet air quality improvement. My new setup will be basically this concept, but due to ignition challenges, new plenums are required.